package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.Userserivce;
import com.sky.utils.HttpClientUtil;
import org.apache.http.impl.client.HttpClients;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
public class UserserivceImpl implements Userserivce {
    //微信服务接口地址
    public static final String WX_LOGIN="https://api.weixin.qq.com/sns/jscode2session";
    @Autowired
private WeChatProperties weChatProperties;
    @Autowired
    private UserMapper userMapper;
    @Override
    public User wxLogin(UserLoginDTO userLoginDTO) {
String openid=getopinid(userLoginDTO.getCode());

        //判断openid是否为空，如果为空,登入失败
        if(openid==null){
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }
        //判断当前用户是否为新用户
        User user = userMapper.getByOpenid(openid);
        //如果为新用户自动完成注册
        if(user==null){
             user=user.builder()
              .openid(openid)
              .createTime(LocalDateTime.now())
              .build();
      userMapper.inset(user);
        }
        //返回这个用户对象
        return user;
    }
    //调用微信接口服务，获取微信用户的openid
    private String getopinid(String code){
        //调用微信接口服务，获得当前微信用户的openID
        Map<String,String> map=new HashMap<>();
        map.put("appid",weChatProperties.getAppid());
        map.put("secret",weChatProperties.getSecret());
        map.put("js_code",code);
        map.put("grant_type","authorization_code");
        String json= HttpClientUtil.doGet(WX_LOGIN, map);


        JSONObject jsonObject= JSON.parseObject(json);
        String openid=jsonObject.getString("openid");
return openid;

    }



}
